Tweezers



Nov. 26, 1946.- G M, FERGUSON 2,411,825

i TwEEzER Filed Deo. 1l, 1945 :f1 *9* 7 v INVENTOR. Geofge///frguso/z.

Patented Nov. 26, 1946V UNITED STATES PATENT FFICE TWEEZERS George M.Ferguson, Portland, Greg.

Application December 11, 1943, Serial No. 513,872

(Cl. 8l-43) 3 Claims.

This invention relates to tweezers of which there are several kinds, forexample toilet tweezers, jeweler and watch maker tweezers, and so on.The first kind will have normally open jaws, the second normally closedjaws.

The current art has so far as known always made tweezers of all metalconstruction, which involved making the blades springy and thin. If theloop or spring part was thin, it must have spring temper and then whenthe jaws were brought together they rst closed, then separated,detracting from their usefulness.

The object of the present invention is to produce a form of tweezerswherein the blades can be and preferably are sumciently rigid so thatone can grasp an object with rmness, such as when removing a splinter.The blades will be prefer'- ably of tempered steel and so formed thatthey do not yield enough to lose their grip.

Another object is high availability with low cost of manufacture.

A still further object is a construction wherein l accurate registry ofthe tweezer blade will be permanent.

The invention is tov be found in holding two blades, preferably oftempered steel, in a head of rubber, reclaimed rubber or anysubstancehaving the well known characteristics of rubber; the wordrub-ber as used herein being employed in the broad sense.

A `drawing showing three forms of tweezers having blades made up into arubber head and wherein all of the iiexing necessary to bring the pointsof the blades rrnly into contact with an object is to be deemed asresiding in the head, accompanies and forms a part hereof.

In the drawing,

Fig. 1 is a perspective view of a tweezers structure embodying theinvention.

Fig. 2 shows a side view, partly in section, of the structure shown inFig. 1.

Fig. 3 is a section in part cf a modification of the device shown inFig. 1.

Further describing the drawing: The blade members I are ribbed at 5 forstiffness and the ends opposite the points of each blade are embedded ina resilient rubber head 2.

The blades will be spaced apart at both ends as shown and concurrentlymoulded into the head 2 and vulcanized the procedure for which is wellknown. The free ends of the blades are closable together to pick up anobject when linger pressure is applied thereto, by yielding of theresilent rubber head rather that ofthe blades. The embedded ends areshown in Fig. 2 at 3.

The modication of Fig. 3 consists in adding a reinforcing spring steelloop l5 wholly embedded in the head 2 and likewise vulcanized to therubber. The head is shown to have an interior space between the kbladesl which may be supplemented by an open space l. The loop 6 is forreinforcing the head 2 so that the blades I will be constrained to openand close in the same plane.

As to cost, in quantity production the blades, especially those of thetype shown in Fig. 3, can be stamped from proper sheets withgreatrapidity, heat treated in bulk and then assembled in multiplemoulds which at the same time serve as jigs for proper placement in therubber heads. The heads may or may not be buffed after theyare'vulcanized, but at any rate an exceptionally effective tool isthought possible at a highly competitive cost of production.

n Having fully disclosed my invention, what I claim as new and desire tosecure by Letters Patent, is: y

1. Tweezers comprising a rubber head member, a pair of blade members,one end of each blade being embedded in the head with the other endsthereof in registry alignment` said blades spaced apart bythe head andheld apart at their opposite ends by reason of placement in the head,said head member being resilient and having a space in the interiorthereof between the blades adapting it to yield to pressure on theblades to bring the blades into contact.

2. Tweezers with blades having operative tips movable with respect toeach other to grasp an object, comprising a pair of blade members yoneend of each blade member deeply embedded in said rubber head, theOpposite ends normally open and closable into registry, the embeddedends spaced apart and a U shaped piece of metal reinforcing memberWholly embedded in the rubber head with its ends between the embeddedends of the blades and spaced therefrom within the rubber.`

GEORGE M. FERGUSON.

